Woodstock M1049 manual Setting RPM, To determine and set the needed cutting RPM, do these steps

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Setting RPM

To determine and set the needed cutting RPM, do these steps:

1.Use the table in Figure 31 to determine the cutting speed required for the workpiece material.

2.Determine the average final diameter of the workpiece in inches, for the cut to be made.

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3.Now use the following formula to determine the closest RPM for the cutting operation:

(Cutting Speed x 4) = RPM

Diameter of Cut

4.With the calculated RPM, refer to the RPM Chart on Page 31 and select the pulley ratio that gives you the closest RPM to what you need.

5.DISCONNECT THE LATHE FROM POWER!

6.Release the belt tension lever (Figure 32).

7.Make sure the spindle is completely stopped and then open the belt access door (Figure 33).

8.Move the belt to the appropriate pulley combination that is closest to your calculated RPM. In the chart for example, 300 RPM is needed so BC2 is selected:

Cutting Speeds for High Speed Steel

(HSS) Cutting Tools

Workpiece Material	Cutting Speed
	(sfm)
Aluminum & alloys	300
Brass & Bronze	150
Copper	100
Cast Iron, soft	80
Cast Iron, hard	50
Mild Steel	90
Cast Steel	80
Alloy Steel, hard	40
Tool Steel	50
Stainless Steel	60
Titanium	50
Plastics	300-800
Wood	300-500

Note: =fiZXiY`[\Zlkk`e^kffcj#[flYc\

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tion.

=`^li\31% Cutting speed table for HSS

cutting tools.

Figure 32. Belt tension lever.

9.Close the door and re-tension the belt.

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Figure 33. Belt and change gear access.